Just as the title says — it is on the PS Store flash sale marked as free for the Vita if you are a PSN user. Even better is that it is a cross-buy so you will get it for the PS3 and PS4 whether or not you have a Vita if you "buy" the Vita version. It is probably a pricing mistake as the other versions are priced $4.50 so grab it while you can!
Last edited by cracker,